Reverse-engineering the waveform generator in a 1969 #breadboard - http://www.righto.com/2022/03/reverse-engineering-waveform-generator.html
I didn't know this was difficult to restore and/or get this to work out. Very nice piece.
@joeo10 I seem to recall curiousmarc restoring a similar one!
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko